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Summary of Activities in Shares of Capital Stock (Details) - shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Common Class A [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Shares, Outstanding | 17,642,722 | 16,595,783
Exercise of stock options | 109,587 | 160,282
Stock dividends | 889,554 | 837,410
Conversion of Class C to Class A | 116,168 | 49,247
Common Stock, Shares, Outstanding | 18,758,031 | 17,642,722
Common Class C [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Shares, Outstanding | 2,866,565 | 2,679,603
Exercise of stock options |  | 104,656
Stock dividends | 139,462 | 131,553
Conversion of Class C to Class A | (116,168) | (49,247)
Common Stock, Shares, Outstanding | 2,889,859 | 2,866,565

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- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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- Definition Other than shares newly issued, the number of additional shares issued (for example, a stock split) or canceled (for example, to correct a share issuance), during the period under the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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